How can I get my girlfriend back?

It's hard to answer. You didn't give very much information. Are you too closed up emotionally? Does she wish you opened up more? The best thing I can suggest without really knowing your situation is that you write her a heartfelt letter about what you love and miss about her, and at the end of the letter, ask for her to give you another chance and tell her what you want to do and will try to change to make her happy. tell her that you would appreciate her help and patience with you.

If your comunication is a problem -you can analize the reasons for it. May be you need some time allone before to re-evaluate your relation. Try not to force her to be with you right now. Wait some time and call again. Good luck:-)

Communication is extremely important for the relationship. You should really try and find out what exactly is making the problem and whatever it is find a way to make it subside. If she is willing to work it out then you should definitly work on your communicating. Like I said it's very important. If you don't have that, then you don't have a good and healthy relationship.